/**************************************************************************************************

	NSurvey - The web survey and form engine
	Copyright (c) 2004, Thomas Zumbrunn. (http://www.nsurvey.org)

	Dotnetnuke PA module 
	Copyright (c) 2004, Oliver Hine (oliver.hine@gmail.com)

	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License
	as published by the Free Software Foundation; either version 2
	of the License, or (at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.


************************************************************************************************/
using DotNetNuke;
using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Votations.NSurvey.DataAccess;
using Votations.NSurvey.Data;
using Votations.NSurvey.BusinessRules;
using Votations.NSurvey.WebAdmin.UserControls;

namespace Votations.NSurvey.WebAdmin
{
	public class FilterEditor : PageBase
	{
		protected HeaderControl Header;
		protected System.Web.UI.WebControls.DropDownList FilterDropDownList;
		protected System.Web.UI.WebControls.HyperLink CreateFilterHyperLink;
		protected SurveyListControl SurveyList;
		protected System.Web.UI.WebControls.Literal FilterBuilderTitle;
		protected System.Web.UI.WebControls.Literal SelectFilteraLabel;
		protected FilterOptionControl FilterOption;

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		///		Required method for Designer support - do not modify
		///		the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.FilterDropDownList.SelectedIndexChanged += new System.EventHandler(this.FilterDropDownList_SelectedIndexChanged);
			this.Load += new System.EventHandler(this.Page_Load);
		}
		#endregion

		private void Page_Load(object sender, System.EventArgs e)
		{
			try
			{
				SetupSecurity();
				LocalizePage();

				if (!Page.IsPostBack)
				{
					SurveyList.SurveyId = SurveyId;
					SurveyList.BindDropDown();
					Header.SurveyId = SurveyId;
				
					// Init the user control with the current survey id
					FilterOption.SurveyId = SurveyId; 
					BindFields();
				}

				if (FilterDropDownList.SelectedValue != "0")
				{
					FilterOption.FilterId = int.Parse(FilterDropDownList.SelectedValue);
					FilterOption.Visible = true;			
				}
				else
				{
					FilterOption.Visible = false;
				}
			
				FilterOption.OptionChanged += new EventHandler(FilterOption_OptionChanged);
			}
			catch( Exception exc)
			{
				DotNetNuke.Services.Exceptions.Exceptions.ProcessModuleLoadException(this,exc);
			}
		}

		private void SetupSecurity()
		{
			CheckRight(NSurveyRights.CreateResultsFilter, true);
		}

		private void LocalizePage()
		{
			FilterBuilderTitle.Text = GetPageResource("FilterBuilderTitle");
			SelectFilteraLabel.Text = GetPageResource("SelectFilteraLabel");
			CreateFilterHyperLink.Text = GetPageResource("CreateFilterHyperLink");
		}

		/// <summary>
		///	Triggered by the filter option user control
		///	in case anything was changed we will need to
		///	rebind to display the updates to the user 
		/// </summary>
		void FilterOption_OptionChanged(object sender, EventArgs e)
		{
			BindFields();
		}


		private void BindFields()
		{
			CreateFilterHyperLink.NavigateUrl = UINavigator.FilterCreator + "&surveyid="+SurveyId + "&menuindex="+MenuIndex;
			FilterDropDownList.DataSource = new Filters().GetFilters(SurveyId);
			FilterDropDownList.DataMember = "Filters";
			FilterDropDownList.DataTextField = "Description";
			FilterDropDownList.DataValueField = "FilterID";
			FilterDropDownList.DataBind();
			FilterDropDownList.Items.Insert(0, 
				new ListItem(GetPageResource("SelectFilterMessage"),"0"));
			if (FilterDropDownList.Items.Count < 2)
			{
				FilterDropDownList.Visible = false;
			}

		}

		private void FilterDropDownList_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			FilterOption.BindFields();
		}

	}
}
